* [PATCH] ewrk3.c: don't reference skb after passing it to netif_rx
@ 2001-02-26 23:53 Arnaldo Carvalho de Melo
0 siblings, 0 replies; only message in thread
From: Arnaldo Carvalho de Melo @ 2001-02-26 23:53 UTC (permalink / raw)
To: Alan Cox, davies, linux-kernel
hey, look at this! 8)
Em Mon, Feb 26, 2001 at 08:33:59PM -0300, Arnaldo Carvalho de Melo escreveu:
Hi,
I've just read davem's post at netdev about the brokeness of
referencing skbs after passing it to netif_rx, so please consider applying
this patch. Ah, this was just added to the Janitor's TODO list at
http://bazar.conectiva.com.br/~acme/TODO and I'm doing a quick audit in the
net drivers searching for this, maybe some more patches will follow.
- Arnaldo
--- linux-2.4.2/drivers/net/ewrk3.c Fri Feb 16 22:06:17 2001
+++ linux-2.4.2.acme/drivers/net/ewrk3.c Mon Feb 26 22:26:45 2001
@@ -997,19 +997,6 @@
isa_memcpy_fromio(p, buf, pkt_len);
}
- /*
- ** Notify the upper protocol layers that there is another
- ** packet to handle
- */
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
-
- /*
- ** Update stats
- */
- dev->last_rx = jiffies;
- lp->stats.rx_packets++;
- lp->stats.rx_bytes += pkt_len;
for (i = 1; i < EWRK3_PKT_STAT_SZ - 1; i++) {
if (pkt_len < i * EWRK3_PKT_BIN_SZ) {
lp->pktStats.bins[i]++;
@@ -1031,6 +1018,19 @@
if (lp->pktStats.bins[0] == 0) { /* Reset counters */
memset(&lp->pktStats, 0, sizeof(lp->pktStats));
}
+ /*
+ ** Notify the upper protocol layers that there is another
+ ** packet to handle
+ */
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+
+ /*
+ ** Update stats
+ */
+ dev->last_rx = jiffies;
+ lp->stats.rx_packets++;
+ lp->stats.rx_bytes += pkt_len;
} else {
printk("%s: Insufficient memory; nuking packet.\n", dev->name);
lp->stats.rx_dropped++; /* Really, deferred. */
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2001-02-26 23:53 [PATCH] ewrk3.c: don't reference skb after passing it to netif_rx Arnaldo Carvalho de Melo
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